3 comments:

First, the hockey stick was based on tree ring data for the historical record. That data was independently checked with other measurements and found to be in agreement. But from 1960 the tree rings and actual instrumental records diverged. So the instrumental records were used instead. So suspect data was replaced by actual data.

Secondly, Saiers was fired for not following the recognised procedure for comments and replies, and actively conspired to prevent rebuttal of the so-called debunking of the hockey stick.